The article constitutes a contribution to the critique of the printed edition of mediaeval municipal ledgers of Cracow from the years 1390-1410. The author discusses the editorial method, indicates its errors, and using selected examples, compares fragments of the available edition with its manuscript basis, stressing the importance of manuscript municipal ledgers of Cracow for the research on various aspects of city life in the capital of the Kingdom of Poland at the turn of the 14th and 15th centuries. He also propounds that further research on that topic should be undertaken.